package com.atguigu.gulimall.cart.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * 需要计算的属性必须重写它的get方法, 保证每次获取属性都会进行计算
 * @Author: WackyBoy
 * @Date: 2021/7/12 20:27
 */
public class Cart {

    List<CartItem> items;

    private Integer countNum;  // 商品数量

    private Integer countType;      // 商品类型数量

    private BigDecimal totalAmount;     // 商品总价

    private BigDecimal reduce = new BigDecimal("0.00");      // 减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if(items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += item.getCount();
            }
        }
        return count;
    }



    public Integer getCountType() {
        int count = 0;
        if(items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += 1;
            }
        }
        return count;
    }


    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        if(items != null && items.size() > 0) {
            for (CartItem item : items) {
                if(item.getCheck()) {
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount = amount.add(totalPrice);
                }
            }
        }
        // 2. 减去优惠总价
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }


    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
